<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>计数器-Vue.js</title>
    <script src="../lib/vue-2.6.12.js"></script>
    <link href="../image/favicon.ico" rel="shortcut icon">
</head>
<body>
      <div id="app">
          <button @click="subtract">-</button>
          <h1>进球数：{{num}}</h1>
          <button @click="add">+</button>
      </div>
     <script>
         var vm = new Vue({
             el:'#app',
             data:{
                 num: 0,
             },
             methods:{
                 subtract: function(){
                     this.num--;
                     console.log('1hello vue')
                 },
                 add: function(){
                     this.num++;
                     console.log('2hello vue')
                 }
             }


         })

     </script>
</body>
</html>